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Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation and Initial Configuration Guide
OL-13208-01
Chapter3 Prep aring Your Site for Installation
Site Planning
Rack Selection Guidelines
The Cisco 1000 Series Router can be mounted in most two-post or four-post, 19-inch equipment racks
that comply with the Electronics Industries Association (EIA) standard for equipment racks (EIA-310-D
19-inch). The rack must have at least two posts with mounting flanges to mount the chassis.
Caution When mounting a chassis in any type of rack equipment, make certain the inlet air to the chassis does
not exceed 55C.
The distance between the center lines of the mounting holes on the two mounting posts must be 18.31
inches ± 0.06 inch (46.50 cm ± 0.15 cm). The rack-mounting hardware included with the chassis is
suitable for most 19-inch equipment racks.
We recommend that you mount the Cisco 1000 Series Router in an equipment rack which includes the
necessary rack-mounting hardware which is suitable for most 19-inch equipment racks.
Consider installing the Cisco 1000 Series Router in a rack with the following features:
•NEBS compliant, 19-inch (48.3 cm) wide rack.
•EIA or ETSI hole patterns in the mounting rails. Required mounting hardware is shipped with the
Cisco 1000 Series Router. If the rack that you plan to install the system in has metric-threaded rails,
you must provide your own metric mounting hardware.
•Perforated top and open bottom for ventilation to prevent overheating.
•Leveling feet for stability.
Note The Cisco 1000 Series Router should not be installed in an enclosed rack because the chassis requires
an unobstructed flow of cooling air to maintain acceptable operating temperatures for its internal
components. Installing the router in any type of enclosed rack—even with the front and back doors
removed—could disrupt the air flow, trap heat next to the chassis, and cause an overtemperature
condition inside the router. If you use an enclosed rack, make certain that there are air vents on all sides
of the rack and there is proper ventilation.
Equipment Rack Guidelines
The placement of the rack can affect personnel safety, system maintenance, and the system ability to
operate within the environmental characteristics described in Table3-2 on page 3-7. Choo se a proper
location for the Cisco 1000 Series Router by following the guidelines below.

Locating for Safety

If the Cisco 1000 Series Router is the heaviest or the only piece of equipment in the rack, consider
installing it at or near the bottom to ensure that the rack’s center of gravity is as low as possible.
For additional information about the proper placement of electronic equipment, consult the document
GR-63-CORE, Network Equipment Building System (NEBS) Requirements: Physical Protection.

Locating for Easy Maintenance

Keep at least 3 feet of clear space in front and behind the rack. This space ensures that you can remove
the Cisco 1000 Series Router components and perform routine maintenance and upgrades easily.